“To a Reformational Catholic, it’s blindingly obvious that there’s a billion-member Church of Jesus Christ centered in Rome. “
Depends. If they trust in their own righteousness to be saved, and think that they are earning or keeping salvation based on their obedience, then they are damned, since they do not trust in the accomplished work of Jesus Christ. By Grace alone, by faith alone, by Christ alone, for God’s glory alone, are not negotiable doctrines for Reformed Christians, and whoever does not hold to them isn’t Reformed at all, even if they try to bastardize the term by adding “Catholic” next to it. And so, whoever does not hold to them, is certainly in profound danger. If they despair of themselves and trust in Christ for the full work of their salvation, the imputation of His righteousness (not their own) being placed upon them, then they do well, even with all their flaky doctrines, even if they themselves do not understand all the thelogical jargon which they are unaware of.
Though I do notice that, most of the time, God pulls people out of these organizations, and I would be suspect of a person’s salvation who does not eventually leave these groups, whether the RCC, or Seventh Day Adventists, etc.
All Christians need to seriously examine their own faith, to see whether or not they are IN the faith to begin with. This means studying the Holy Scriptures, and not remaining slack in their responsibilities. But I have confident that all whom the Father has given to the Son will surely come to the Son, one way or the other.
1/6th of the world's population as Christian? I don't think so.
nice conclusion :).